OPINA, Ma. Fe D. PTCA-Funded Public Preschools: Basis for Adopt-A-Preschool Program. JPAIR Multidisciplinary Research, Philippines, v. 2, n. 1, p. 17–29, 2009. DOI: 10.7719/jpair.v2i1.55. Disponível em: https://www.philair.ph/index.php/jpair/article/view/55. Acesso em: 2 may. 2025.